Colo. Rev. Stat. § 29-8-102
The general assembly finds that landowners, cities, towns, counties, public utilities, and cable operators in many areas of the state desire to convert existing overhead electric and communication facilities to underground locations. The general assembly further finds that the conversion of overhead electric and communication facilities to underground locations is a matter of statewide concern and interest. The general assembly declares that a public purpose will be served by providing a procedure to accomplish such conversion and that it is in the public interest to provide for such conversion by proceedings taken under this article, whether such areas are within the limits of a city or town or within a county. The general assembly further declares that all political subdivisions shall pursue such conversion only in accordance with this article; except that the use of the procedure set forth in this article is permissive and not mandatory for incidental and episodic conversions associated with public improvements such as street widening or sewer construction. Notwithstanding the provisions of this article, a political subdivision shall be able to perform such underground conversion without following the procedures outlined in this article if the political subdivision pays for all of the costs and expenses of such conversion from the political subdivision's own funds on the condition that the political subdivision does not seek to recover the costs or expenses of such conversion from the public utility or cable operator.
C.R.S. § 29-8-102